"The Report confirms that by 8:33, "it had reached its assigned cruising altitude of 31,000 feet." According to the Report, it maintained this cruising altitude until 8.51, when it "deviated from its assigned altitude":"*
V 8:33 dosáhl let 175 (narazil do jižní věže) letové výšky 31 000 stop (9 448,8 m!), ve které zůstal do 8.51, kdy s letadlem začali únosci klesat.
(...)
"And one minute later at 8.52, Lee Hanson receives a call from his son Peter."*
Takže minutu po zahájení setupu už se vesele telefonovalo.
To zase bude flejm.
* http://www.globalresearch.ca/articles/CHO408B.html